Process for the preparation of gamma-valerolactone
AssigneeSynvina C.V.
InventorsNicolas André Vélu Popoff, Jan Cornelis van der Waal
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Abstract
Gamma-valerolactone is prepared from a levulinic acid ester in a continuous process where a stream of the levulinic acid ester together with a gaseous stream of a hydrogen-containing gas is contacted with a hydrogenation catalyst, where the levulinic acid ester is in the liquid phase, and where the hydrogenation catalyst is a solid particulate catalyst including at least one hydrogenating metal, supported on an oxide carrier.
Claims19
A continuous process for the preparation of gamma-valerolactone (GVL) from a levulinic acid ester comprising:
- contacting a stream of the levulinic acid ester together with a gaseous stream of a hydrogen-containing gas with a hydrogenation catalyst,
- wherein the levulinic acid ester is in the liquid phase,
- wherein the hydrogenation catalyst is a solid particulate catalyst comprising at least one hydrogenating metal, supported on an oxide carrier, and
- which is conducted in the absence of solvent.
A continuous process for the preparation of gamma-valerolactone (GVL) from a levulinic acid ester comprising:
- contacting a stream of the levulinic acid ester together with a gaseous stream of a hydrogen-containing gas with a hydrogenation catalyst,
- wherein the levulinic acid ester is in the liquid phase,
- wherein the hydrogenation catalyst is a solid particulate catalyst comprising at least one hydrogenating metal, supported on an oxide carrier,
- wherein the hydrogenation catalyst comprises copper as hydrogenating metal, and
- wherein the hydrogenation catalyst comprises a zinc compound as dopant.
A continuous process for the preparation of gamma-valerolactone (GVL) from a levulinic acid ester comprising:
- contacting a stream of the levulinic acid ester together with a gaseous stream of a hydrogen-containing gas with a hydrogenation catalyst,
- wherein the levulinic acid ester is in the liquid phase,
- wherein the hydrogenation catalyst is a solid particulate catalyst comprising at least one hydrogenating metal, supported on an oxide carrier, and
- wherein the hydrogenation catalyst comprises a platinum-group metal as hydrogenating metal and, optionally, tin or a tin compound as dopant.
Dependencies are inferred from the claim text.